Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 163)

Chapter 6
6–1
1336 FORCE — 5.9 August 1995
Handling Exceptions — Faults and
Warnings
This chapter provides the following information:
❒
Handling function block faults and warnings
❒
Accessing the system fault and warning queues
❒ Handling download service errors
❒
Handling compiler faults
❒
Using the Task Status service
❒ Using the Fault Status service
❒
Fault codes
If there is a problem with your function block application, either a
fault or a warning will occur.
Function Block Faults
All function block faults are soft faults. Soft faults indicate that an
error has been detected that could damage drive components or the
motor. Soft faults may also indicate potential undesirable operation.
You cannot enable the drive if you have a soft fault condition.
You need to correct the problem that caused the fault before you can
clear the function block system fault with a clear faults command. If
you use a clear faults command before you correct the function block
problem, the function block fault will remain in the queue but the
other faults in the system queue will be cleared.
When the drive encounters a function block fault, the following
occurs:
❒ The drive disables the 20 millisecond task interval.
❒
The function block task status returns a faulted status value of
0xFF
Hex
when read.
❒ Word 4 of the function block fault read service is non–zero.
❒
An entry is logged in the system fault queue. You can view the
system fault queue from DriveManager.
Chapter Objectives
Handling Function Block
Faults and Warnings